Control structures

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Main idea

Control structures let programs make decisions (conditionals) and repeat actions (loops). They underpin most Partial I exercises.

Official material: Lenguaje C (Prof. Colombo)

See the Spanish version for full examples of if-else, switch, for, while, and do-while, aligned with the professor’s slides.

Next steps

• Functions
• Classes and objects
• Exercise guide

Interactive exam

Control structures

Based on: Lenguaje C — Prof. Maria Ines Colombo

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if-else is used to...

Repeat code many times Run actions based on a condition Include libraries Declare variables

In C++, switch compares the variable with values of type...

Long strings only Integers or characters Booleans only Any type without restriction

A for loop is useful when...

You know start, end, and step of the counter You never know when it ends You only need to print one line You do not want to repeat code

The key difference of do-while vs while is that...

do-while checks the condition at the end (runs at least once) while always runs more times do-while does not use braces There is no difference

What is break for inside a switch?

End the program Exit the case and avoid falling through to the next Restart the switch Declare a constant

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